John k



carriage-jack.

@eine 'tatns ztient @ffice JOHN KOIILEILOF NEW YO.1t K,N. Y.

Letters Patent No. 76,927, dated April 21, 1868.

IMPROVEMENT IN IiII'TINGfJAGKS.

the silgihnlt ninna te iu this: trtrrs nent amt making part et tte same.

TO ALL WHOM MAY CONCERN:

Bo it known that I, JOHN KOIILER, of tho city, county, and State of NewYork, have invented a new and useful Improvement in Carriage-Jacks; anddo hereby declare that the following is afull and exact descriptionthereof, reference being had to the accompanying drawings making partei"this specification, of which-- Figure 1 is a side elevation, and

Figure 2 a sectional elevation.

This in'vention relates to a novel device for raising the axles ofvehicles, for the purpose ofa'emoving the wheels for lubrication, aswell as for elevating heavy objects, end consists of aforked lever,embracing aratchetwheel and pawl, which operate a pinion, rack, andretaining-pand, the whole being contained in a wooden irnincwork, asshown in the drawings. l

In the said drawings, A represents the bifnrcatod hand-lover, placed onthe main shaft B, and embracing in its fork the pawl C and ratchet-wheell).- On the hub of this wheel D -is cast a pinion, E, which operates av,

slidingraclc, F. G is the retaining-pand, and H is a stationary pin,which-nids in disengaging the pawls from the ratchet-wheel. I is a slotin the case K, through which a pin, i, firmly secured to the rack, movesnp :ind down with the said rack. i

The oporationof my invention is as follows: By placing the'jaeleunderthe axle of' a carriage, and actn ating the lever A, the pawl' C willengage with the ratchet-wheel D, and rotate the same, as the lever ispressed downward, and the pinion E, attached to the said wheel, playinginto the rack E, will slide the racleupward, thereby raising the axleand wheels of thc carriage from the ground, while the retaining-parel G,engaging with the wheel D, will hold tho rack in position (see lig. 1)as long as required; and when it is desired to lower the axle and wheelor wheels to their original position on the ground, the lever Adsraised, (seo fig. 2,) when the pa-wl C will be'disongaged from theratchet-wheel D by passing over the pin H, throwing the retaining-pandG- out of the'ratchet-wheel at the same time, and the rack F permittedto descend with the axle and wheels.

Furthermore, the in z', ro'cctin from the rack, tends to stead themovements oftlle rack and can be used P P J vs y i for raising weightsbelow the height el' the jack.

Having described my invention, what I clann'and desire to secure byLetters Patent, is- The lever A, pawls C G, and pawl-disengaging pin II,in combination with the ratchet-'wheel D, pinion E, and rack I",substantially as and for the purposes set forth.

I also claim the slot I and pin z', all operating together, as shown anddescribed, to form a new and improved In testimony whereof, I havehereunto set my signature, this eleventh day of March, A. D. 1868.

JOI-IN KOIILER.

Witnesses JOHN PAAR, A. N ErLL.

